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Fabrication and whispering gallery resonance of self-rolled up gallium nitride microcavities
KTH, School of Information and Communication Technology (ICT), Industrial and Medical Electronics.
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2017 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 627, p. 77-81Article in journal (Refereed) Published
Abstract [en]

The C-plane monocrystalline GaN/ZnO thin film epitaxially grows on A-plane sapphire substrate by molecular beam epitaxy (MBE) is revealed by the reflection high-energy electron diffraction (RHEED). The monocrystalline GaN nanomembranes have been rolled up into tubular microstructures as whispering gallery microcavities, which support the whisper gallery modes (WGMs) in the violet and blue regime. The WGMs of the rolled-up monocrystalline GaN devices are tunable with microtube diameter by tuning the strain gradient of the GaN nanomembranes. This approach could help with not only the further development of GaN-based photonic devices, but also the physical understanding of other rolled-up optical microcavities.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2017. Vol. 627, p. 77-81
Keywords [en]
GaN, Microtube, Rolled-up, Whispering gallery mode (WGM)
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-207710DOI: 10.1016/j.tsf.2017.02.059ISI: 000400215300011Scopus ID: 2-s2.0-85014865403OAI: oai:DiVA.org:kth-207710DiVA, id: diva2:1098504
Note

QC 20170524

Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2017-06-30Bibliographically approved

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Zheng, Li-rong

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